Attachment for spinning machines



Nov. 5, 1929. A. B. SUMMEY ET AL ATTACHMENT FOR SPINNING MACHINES Filed Sept. 1, 1927 AB. Emumme T.D..Summ e5 E.FA-L1"LS an.

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Illllllll lllllllllllllll u l L; l-l \JK-I U Patented Nov. 5, 1929 UNITED STATES PATENT OFFICE' ALEXANDER B. SUMMEY, BENJAMIN F. ALLISON, AND THOMAS 3030, NORTH CAROLINA O. SUMMEY, 0F HILLS- ATTACHMEN'I FOR SPINNING MACHINES Application filed September 1, 1927. Serial No. 216,990.

Our invention is an attachment whereby the ordinary doffing latch upon a spinning machine may be manipulated to secure the ring rail in position for forming a bunch. There has been heretofore provided upon spinning machines a dofling latch carried by the lifter armand so arranged that, when dofling was required, the ring rail may be held at the lowest limit of its travel but this doiling latch was ineffective to permit the formation of bunches in an economical manner, and we have devised a very simple and inexpensive attachment for the dofiing latch the use of which the ring rail may be held in proper position to permit the formation of a bunch without waste of yarn. The invention is illustrated in the accompanying drawing and consists in certain novel features which will be particularly pointed out in the claims following a detailed description.

In the drawing:

Figure 1 is a front elevation of a portion of a spinning machine having our invention applied thereto and showing the parts in the dofiing position Fig. 2 is a detail elevation showing the latch in the normal position to permit the usual operation of the spinning machine;

Fig. 3 is a detail perspective View of the device constituting our invention;

Fig. 4 is an enlarged detail perspective view of the doiiing, latch, and

Fig. 5 is a detail perspective View of the bunch latch and the doffer latch assembled.

Referring particularly to the drawing, the reference numeral 1 indicates the ring rail, 2 the spindle rail and 3 the lower rail which are of the usual construction, the ring rail carrying the rings, indicated at 4, and the spindle rail carrying the spindles, indicated at 5, in the usual manner, the spindle rail and the lower rail being fixed to the frame of the machine and the ring rail being mounted for vertical reciprocation. The ring rail is supported upon a series of litter rods 6 which have their upper ends in engagement with the under side of the rail and their lower ends engaged with lifter arms 7 which are equipped with counterweights 8 and also have upwardly project-ing arms 9 connected with the builder mechanism (not shown) in the usual manner. The builder mechanism, in the ordinary operation of the machine, exerts a pull upon the arm 9 so that the lifter arm 7 is depressed against the force of the counter-weight 8 and the ring rail is there by permitted to descend under its own weight while return movement is effected by the counter-weight when the low part of the builder cam is presented to the member cooperating therewith. Pivotally mounted upon the free end of the lifter arm is a doffer latch 10 which is constructed With a step 11 at its lower extremity immediately adjacent its pivotal connection with the lifter arm and has its upper extremity in the form of a shoulder 12 adapted to engage under the rail 3 of the frame so that the upward movement of the lifter arm and the lifter rod 6 engaged thereby will be prevented, the ring rail being thus held in its lowest position so that dofling may be effected. Normally, the doffing latch lies to one side of the lifter arm so that it will clear the lower rail 3 and move vertically past the same, as will be under stood on reference to Fig. 2, but when dofling is to be effected the operator presses upon the step, 11 and thereby swings the dofling latch into the vertical plane of the railv 3 so that upon the ensuing upward movement of the lifter arm the shoulder 12 will engage under the rail andrestrain the upward movement of the ring rail. In order that the latch may be adjusted to various requirements, it is constructed in two members, as shown clearly in the drawing, having interengaging teeth, indicated at 13, and one member having a longitudinal slot 14 to receive a clamping bolt, indicated at 15, carried by the other member. i

All of the parts so far described are well known in the art and operate in the well known manner which has been briefly outlined. The latch shown and described, however, was inetlective to hold the ring rail in the bunch-forming position and bunches formed upon the spindles in machines equipped only with the described dofiing latch Caused a very propounced waste of yarn. To minimize the waste and provide means whereby the ring rail may be held in the bunch-forming position, we have devised the bunch latch shown in Fig. 3 and consisting of a somewhat vertically elongated block 16 provided on one side face with the parallel flan ges or edge ribs 17 adapted to engage closely to the side ecges of the upper member of the dothng latch, the forward flange being beveled off at the upper end, as indicated at 18, whereby it may iit closely to the inclined ofiset web 19 on the dotling latch. The side face of the bunch latch is also beveled, as indicated at 20 to permit the bunch latch to be fitted closely to the doting latch and be secured firmly to the lat-, ter by the bolt 15 which is inserted through longitudinal slot 21 formed in the lower portion of the bunch latch in an obvious manner. Immediately adjacent the upper end or the bunch latch on the forward edge of the same, there is formed a stop or offset 22 presenting a shoulder which is located below the shoulder 12 of the dofiing latch and is adapted to engage the frame rail 3 when the ring rail is in a somewhat higher position than that in which it will be held by the dothng latch, thereby holding the ring rail at rest in the bunch-forming position.

The bunch latch is secured rigidly to the dofling latch and operates with it and may be adjusted vertically with the upper member of the dotting latch so that the stop or shoulder 22 of the bunch latch will always occupy the same position relative to the shoulder 12 ot the dofling latch. hen dofiing is to be effected, the device is operated in the stated manner so as to engage the dofiing latch under the lower rail 3 and the ring rail will then be held in its lowest position until the rotation of the builder cam presents another high part thereof to the member cooperating therewith, whereupon the latch will be released in the usual manner. When a bunch is to be formed, the operator depresses the lifter arm in the same manner as for dotting but to a less degre so as to permit the ofi'set or shoulder 22 to engage under the rail 3 thereby holding the ring rail at a higher pointand permitting the formation of a bunch.

Our device is obviously simple and inexpensive and actual tests thereof have demonstrated that it is efficient in use and effects a very pronounced saving in the ends of the arn.

Having thus described the invention, we claim:

1. In a spinning machine, the combination with a dofiing laton, of a bunch latch consisting of a block having side flanges en 'aging the side edges of the dotting latch and equipped on its front ed e adjacent its upper end with a rail-engaging shoulder disposed below the rail-engaging element of the dofling latch, and means for securing the bunch latch rigidly to the doffing latch.

2. In a spinning machine,the combination see with a dotting latch, of a bunch latch consisting of a block adapted to fit against the side or the dotting latch and having parallel flanges engaging the front and rear side edges or the dofiing latch and having its side face at its upper end beveled and having an oilset on its frontedge adjacent its upper end to en gage a rail of the spinning machine frame, the block being further provided with acentral vertical slot, and a securing bolt inserted through said slot and through the dotting latch whereby the bunch latch may be rigidly secured to the dcfiing latch and adjusted with the latter.

In testimony whereof we affix our signatures.

ALEXANDER B. SUMMEY. [11.5.]

BENJAMIN r. ALLISON. [n s] rnonas o. SUMMEY. a 5. 

